My English skills are not very good. This description was translated by AI.
The issue appears to be related to an incorrect upload path. Files are being uploaded to an unexpected location (e.g.,
upload/upload/...
upload/upload/...
) instead of the intended directory structure. Additionally, the uploaded files are not following the specified naming conventions.
As a result, the system fails to generate thumbnails for these files, likely because the unexpected path and file names do not align with the application's handling logic.